1. What mass (g) of sulfuric acid must be taken to prepare 250 ml of 2 N solution? 2. For a complex compound [Cu(NH_(3))_(4)]Cl_(2) indicate the outer and inner spheres, central ion, its charge and coordinate number, ligands and there dentation. Name the compound. 3. Finish and balance the redox-reaction MnSO_(4)+NaBiO_(3)+HNO_(3)= 4. Calculate the mass of Ag^+ in 0.1 M solution of diamine silver chloride containing an excess of 1 mole of NH_(3)cdot (K_(inst)=9.3cdot 10^-8) Evnlain if FeCl_(2) can be oxidized by H_(2)O_(2) in acidic media?

Question

1. What mass (g) of sulfuric acid must be taken to prepare 250 ml of 2 N solution? 2. For a complex compound [Cu(NH_(3))_(4)]Cl_(2) indicate the outer and inner spheres, central ion, its charge and coordinate number, ligands and there dentation. Name the compound. 3. Finish and balance the redox-reaction MnSO_(4)+NaBiO_(3)+HNO_(3)= 4. Calculate the mass of Ag^+ in 0.1 M solution of diamine silver chloride containing an excess of 1 mole of NH_(3)cdot (K_(inst)=9.3cdot 10^-8) Evnlain if FeCl_(2) can be oxidized by H_(2)O_(2) in acidic media?

Answer 1

1. To prepare a 2 N solution of sulfuric acid (H2SO4) in 250 ml, you need to calculate the mass of H2SO4 required. Normality (N) is defined as the number of equivalents of solute per liter of solution. For H2SO4, the equivalent weight is 49.04 g/mol (since it provides 2 H+ ions per molecule). Therefore, the mass of H2SO4 needed is:

So, 24.52 grams of sulfuric acid must be taken to prepare 250 ml of a 2 N solution.2. For the complex compound

:- Outer sphere:

and

- Inner sphere:

- Central ion: Cu- Charge: +2- Coordinate number: 4- Ligands: NH3- Dentation: TetrahedralThe compound is named Tetrakis(ammine)copper(II) chloride.3. The balanced redox reaction between

and

in the presence of

is:

4. To calculate the mass of

in a 0.1 M solution of diamine silver chloride (

) containing an excess of 1 mole of

, we need to consider the solubility product constant (

) for

.The solubility product constant for

is

.The dissociation of

in water can be represented as:

Given that the concentration of

is in excess, the concentration of

will be equal to the concentration of

.Let the concentration of

be

. Then, the concentration of

will also be

.The solubility product constant expression for

is:

Now, to find the mass of

, we multiply the concentration by the molar mass of

:

So, the mass of

in the solution is

grams.Regarding the oxidation of

by

in acidic media, we need to consider the standard reduction potentials of the involved species. The standard reduction potential for

is +0.77 V, while for

it is +1.77 V. Since the reduction potential of

is higher than that of

,

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